Finding the Fourth Proportional to 1,870.70, 2,580.17 and 1,373.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.70 : 2,580.17 = 1,373.18 : x
2. Step 2: Convert to fraction form
   1,870.70/2,580.17 = 1,373.18/x
3. Step 3: Cross multiply
   1,870.70x = 2,580.17 × 1,373.18
4. Step 4: Simplify right side
   1,870.70x = 3,543,037.84
5. Step 5: Solve for x
   x = 3,543,037.84/1,870.70
6. Step 6: Final answer
   x = 1,893.96